Steam-boiler



QNo Model.) 2 Sheets-Sheet 1.

M. & W. N. RUMELY.

STEAM BOILER.

' No. 347,384. Patented Aug. 17, 1886.

(No Model.) 2 SheetQ-Sheet 2.

M. & W. N. RUMELY. STEAM BOILER- No.34'7,3 84. Patented Aug. 17, 1886jaw/enters:

' Z119 fliiror. 35 8:

- "UNITED STATES PATENT OFFICE.

MEINRAD RU'MELY AND \VILLIAM N. RUMELY, OF LA FORTE, INDIANA.

STEAM-BOILER.

EFEGIPIGATIQN forming part of Letters Patent No. 347,384, dated August17, 1886.

Application filed February 20, 1886. Serial No. 192,641.

To all whom it may concern.-

Be it known thatwe, ll/IEINRAD RUMELY and WILLIAM N. RUMELY, citizens ofthe United States, residing in La Porte, in the county of La Porte andState of Indiana, have invented a new and useful Improvement inSteam-Boilers, of which the following is a specification.

- This invention relates, particularly, to that class of steanrboilerswhich are designed for use upon road-engines employed for operatingthrashing-machines and the like. Such boilers, when used for operatingor driving the thrashing-machine, operate as stationary engines, and itis frequent]y'desirable to supply them with straw as fuel. When thethrashing-machiue is being moved from place to place dip or incline thesheet at either end, leaving upon the road, the crownsheet at one end orother of the boiler is liable to be left dry or bare at one end or theother of the boiler in going up or down hill, and thus produce in-.jury.

Thepbject of our invention is to provide a practical and efficientboiler of light and cheap construction adapted for such uses. To preventas much as possible the crown-sheet at either end of the boiler frombeing exposed, owing to the unevenness of the ground, we

the highest portion of the boiler in the middle. In the accompanyingdrawings, which form a part of this specification, and in which similarletters of reference indicate like parts, Figure l is a centrallongitudinal section of a device embodying our invention; Fig. .2, afront end View; Fig. 3, a rear end view, and Figs. 4, 5, and 6 are viewssimilar to Figs. 1,

' 2, and 3, showing a slight modification.

said crown-sheet being exposed when this end of the boiler is elevatedhigher than the other.

K is a flat crown-sheet over the combustionchamber D. This crown-sheetis also inclined from its inner end toward the front end of the (Nomodel.)

boiler, as indicated in Figs. 1 and 4, so that when this end of theboiler is elevated the liability of the crown-sheet being exposed willbe diminished. To give the requisite size to the flue-sheet L and spacefor the required number of return-fines without too much elevation ofthe crown-sheet K, we make the fluesheet of about the same diameter asthe main shell Aof the boiler, and provide an enlarged shell part, Asurrounding the combustionchamber D, and which forms the water-spacebetween the combustion chamber and the shell.

The lower part or wall, m, of the combustionchamber may preferably beinclined upward toward its outer end, as shown in Fig. 1, to

give space for a handhole, M, at the end of the boiler. To giveadditional space for this hand-hole, if required, we may extend thebottom sheet, or, about horizontally with the main fine, or provide aswell or enlargement, N, in the outer shell at this point, as shown atFigs. 4 and 5.

The grate 0 may rest upon flanges or angleirons secured to the walls ofthe fire-box.

\Ve hereby disclaim, as forming no part of our invention, thesteam-boiler shown and described in Letters Patent of the United StatesNo. 253,385 to Huber, dated February 7,1882.

1. The combination,inaboiler,of a main flue, A, fire-box B, having itsupper wall or crownsheet, H, inclined downwardly from the inner end ofthe fire-box toward its outer end, and combustion-chamber D, having itscrown-sheet K inclined downwardly from its inner toward its outer end,substantially as specified.

2. The combination of main fine A, shell A, fire-box B,combustion-chamber D, fluesheet L, and crown-sheet K below the waterlineof the boiler, said shell A having enlargement A surrounding saidcombustionchamber, substantially as specified.

,3. In a boiler, the combination, with a firebox, of a main flue, thecombustion-chamber D, and return-fines, the outer shell of said boilerhaving an enlargement surrounding said combustion-chamber, and forming awaterspace between said shell and the walls of said combustion-chamber,and the upper or crown sheet of said combustion-chamber being depressedbelow the water-line ol' the boiler, substantially as specified.

shell A, having an enlargement, A surrounding said combustion-chambenthebottom wall,

4. lhe combination, with a main flue of a m, of said combustion-chainberbeing inclined fire-box and a e0nibustion-ehamber at the end 1 upwardtoward its end, and a hand-hole, M,

5 of said main flue, said fire-box and combustion-chamber each having anupper or crown sheet inclined from its inner toward its outer end,substantially as specified.

5. The combination, with a fire-box, of the IO main flue, aconibustion-chamber, 1), the outer substantially as specified.

MEINRAD RUMELY. WILLIAM N. lUMELY. \Vitnesses:

JOHN HANNA, THOMAS MAoKnY.

